Fire managers still expect the growing Preacher Fire to be contained by Thursday night, that's after the south-central Idaho wildfire made a significant run Tuesday. The lightning-caused fire southwest of Carey is now 31,000 acres.

More than 100 people are fighting the grass and brush fire. "Strong, shifting winds and high temperatures have challenged firefighter’s suppression efforts," the Bureau of Land Management reports.

The Blaine County Sheriff's department says the blaze jumped Highway 26/93 Tuesday night, temporarily shutting down sections of the road.

This story was updated at 8:10 a.m. July 15, 2014.

The Preacher Fire, burning in south-central Idaho, grew to 7,000 acres overnight. High winds and thunderstorms predicted for the area Tuesday could make fighting the fire challenging.

The fire is burning in mostly grass and brush 10 miles northeast of Richfield, Idaho. Almost 60 people are fighting the fire, and more air resources have been ordered.

The Bureau of Land Management says the Preacher Fire was started by lightning.

The Blaine County Sheriff's office posted this photo of the Preacher Fire on Facebook. It's now estimated at 3,500 acres.

Credit Blaine County Sheriff's Facebook Page

This story was originally posted at 10:10 p.m. July 14, 2014.

The Bureau of Land Management reports a south-central Idaho wildfire that started late Monday afternoon has grown to 3,500 acres. The Preacher Fire, burning six miles southwest of Carey, is growing quickly thanks to strong winds and extreme fire behavior.

The BLM says four single engine air tankers and a helicopter are helping ground crews fight the fire.

The Blaine County Sheriff closed some highways on Monday. The sheriff's department is updating its Facebook page with the latest public safety and road information.